B3839 datasheet(3/7 Pages) EPCOS

3 / 7 page

Jan 08, 2002

SAW Components

B3839

333,0 MHz

Low-Loss Filter

Data Sheet

Characteristics

Operating temperature range:

TA = -40 ... 85 ˚C

Terminating source impedance:

ZS = 50 Ω and external matching network

Terminating load impedance:

ZL = 50 Ω and external matching network

1) Temperature dependance of fc: fc(TA) = fc(T0)(1 + TCf(TA – T0)2)

min.

typ.

max.

Center frequency

rel = 3,0 dB

332,88

333,0

333,12

MHz

Minimum insertion attenuation

min

—

6,5

Passband width

rel ≤ 3,0 dB

B3,0dB

900

1010

1045

kHz

rel ≤ 20,0 dB

B20dB

—

1840

2000

kHz

rel ≤ 30,0 dB

B30dB

—

2080

2250

kHz

rel ≤ 40,0 dB

B40dB

—

2250

2500

kHz

rel ≤ 50,0 dB

B50dB

—

4500

—

kHz

Relative attenuation (relative to

min)

rel

fc − 50,0 MHz ... fc − 3,0 MHz

—

fc + 3,0 MHz ... fc + 20,0 MHz

—

fc + 20,0 MHz ... fc + 40,0 MHz

—

fc + 40,0 MHz ... fc + 50,0 MHz

—

Amplitude ripple (p-p)

∆α

fc ± 0,4 MHz

—

0,5

1,0

Absolute group delay (at

fc)

—

0,9

—

µs

Group delay ripple (p-p)

∆τ

fc ± 0,4 MHz

—

430

500

Reflected Wave Signal Suppression

µs ... 20 µs after main pulse

—

Temperature coefficient of frequency 1)

TCf

—

–0,036

—

ppm/K2

Turnover temperature

—15

—

˚C

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